|  | ; RUN: not FileCheck -check-prefix=DAGNOT -input-file %s %s 2>&1 | FileCheck -check-prefix=ERROR -check-prefix=DAGNOT-ERROR %s | 
|  | ; RUN: not FileCheck -check-prefix=NOTDAG -input-file %s %s 2>&1 | FileCheck -check-prefix=ERROR -check-prefix=NOTDAG-ERROR %s | 
|  | ; RUN: not FileCheck -check-prefix=NEXTNOT -input-file %s %s 2>&1 | FileCheck -check-prefix=ERROR -check-prefix=NEXTNOT-ERROR %s | 
|  | ; RUN: not FileCheck -check-prefix=NOTNEXT -input-file %s %s 2>&1 | FileCheck -check-prefix=ERROR -check-prefix=NOTNEXT-ERROR %s | 
|  | ; RUN: not FileCheck -check-prefix=SAMENOT -input-file %s %s 2>&1 | FileCheck -check-prefix=ERROR -check-prefix=SAMENOT-ERROR %s | 
|  | ; RUN: not FileCheck -check-prefix=NOTSAME -input-file %s %s 2>&1 | FileCheck -check-prefix=ERROR -check-prefix=NOTSAME-ERROR %s | 
|  |  | 
|  | foo | 
|  | ; DAGNOT: foo | 
|  | ; DAGNOT-DAG-NOT: bar | 
|  | ; NOTDAG: foo | 
|  | ; NOTDAG-NOT-DAG: bar | 
|  | ; NEXTNOT: foo | 
|  | ; NEXTNOT-NEXT-NOT: bar | 
|  | ; NOTNEXT: foo | 
|  | ; NOTNEXT-NOT-NEXT: bar | 
|  | ; SAMENOT: foo | 
|  | ; SAMENOT-SAME-NOT: bar | 
|  | ; NOTSAME: foo | 
|  | ; NOTSAME-NOT-SAME: bar | 
|  |  | 
|  | ; ERROR: error: unsupported -NOT combo on prefix | 
|  | ; DAGNOT-ERROR-SAME:  'DAGNOT' | 
|  | ; NOTDAG-ERROR-SAME:  'NOTDAG' | 
|  | ; NEXTNOT-ERROR-SAME: 'NEXTNOT' | 
|  | ; NOTNEXT-ERROR-SAME: 'NOTNEXT' | 
|  | ; SAMENOT-ERROR-SAME: 'SAMENOT' | 
|  | ; NOTSAME-ERROR-SAME: 'NOTSAME' |